A trunnion bearing includes an inner ring that has a first exterior surface and a first interior surface. The first exterior surface has a spherical contour. The trunnion bearing includes an outer ring that has a second interior surface and a second exterior surface. The second interior surface has a spherical contour. The inner ring is disposed at least partially in the outer ring. A metallic liner made of a copper based alloy is disposed between the first exterior surface of the inner ring and the second interior surface of the outer ring. The inner ring and/or the outer ring are made from a titanium based alloy.